Interesting suggestion. I can see where one might use Microsoft's Project or similar software -- create scenes as individual tasks (on one calendar) and then assign characters as resources for those tasks. Probably makes the most sense if you already own that software because of the expense and learning curve. Definitely tickles my sense of overkill.

Go to CNET. Downloads. Look up "project manager/management software"
Choose MS or MAC
Choose free or free to try or "pay"
There are plenty.

Which is not free, but does at least have a 20 day demo, and is under current development. It supports "fantasy" calendars which is cool, story arch's and so on. It specially focused on time lines for novels. Only messed with it for about an hour last night but looks like it might work well.

Now the fine part will be to work through my published novels and translate "It took about a week to ..." and "the next day..." to dates.

Which is not free, but does at least have a 20 day demo, and is under current development. It supports "fantasy" calendars which is cool, story arch's and so on. It specially focused on time lines for novels. Only messed with it for about an hour last night but looks like it might work well.

Now the fine part will be to work through my published novels and translate "It took about a week to ..." and "the next day..." to dates.